Quasar

The brightest galaxy ever discovered may be in the process of tearing itself apart. WISE J224607.57-052635.0 (W2246-0526) is believed to be brighter than 300 trillion Suns, however the supermassive black hole at the centre of the galaxy could also be responsible for a drastic transformation.

Astronomers using the Very Large Telescope (VLT) have discovered an alignment of supermassive black holes located billions of light-years apart. The team delved deeper, finding that the quasars aren’t just linked to each other, but are also aligned with the large-scale structure of the Universe.

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It has been difficult to find evidence that the Universe is largely composed of a cosmic web consisting of narrow filaments, but astronomers have now photographed a segment of a cosmic filament glowing due to irradiation from a nearby quasar.

Our knowledge of the large-scale structure of the Universe continues to take shape. Moving forward requires attempts to squeeze subtle information from huge data sets, which can prove a dicey exercise. A case in point are the largest known structures in the Universe – large quasar groups.

The Gaia mission to map a billion stars in the Milky Way has been delayed for about two months by the European Space Agency (ESA). X-band transponders used in other satellites have begun to fail, so the ESA is replacing those modules prior to launching late in December.